feat: Update onboarding docs for v8

[mydea]

In preparation for v8.

Missing is angular, cc @Lms24 feel free to add this to this PR or make a dedicated one!

We should merge this once v8 is released (probably monday).

[Lms24]

@mydea added Angular docs updates and pinned capacitor/ionic framework SDK versions to v7

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 79.88%. Comparing base (be53553) to head (320ffa7). Report is 322 commits behind head on master.

:exclamation: Current head 320ffa7 differs from pull request most recent head 0a87ecd. Consider uploading reports for the commit 0a87ecd to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #70223      +/-   ##
==========================================
+ Coverage   79.84%   79.88%   +0.03%     
==========================================
  Files        6509     6505       -4     
  Lines      289821   289713     -108     
  Branches    49922    49911      -11     
==========================================
+ Hits       231415   231430      +15     
+ Misses      57993    57873     -120     
+ Partials      413      410       -3     

Files	Coverage Δ
static/app/components/updatedEmptyState.tsx	86.11% <ø> (ø)
...tic/app/gettingStartedDocs/capacitor/capacitor.tsx	61.03% <ø> (ø)
static/app/gettingStartedDocs/ionic/ionic.tsx	64.28% <ø> (ø)
...tatic/app/gettingStartedDocs/javascript/nextjs.tsx	46.42% <ø> (ø)
static/app/gettingStartedDocs/node/awslambda.tsx	63.15% <ø> (ø)
...tic/app/gettingStartedDocs/node/azurefunctions.tsx	64.28% <ø> (ø)
static/app/gettingStartedDocs/node/connect.tsx	66.66% <100.00%> (+2.38%)	:arrow_up:
static/app/gettingStartedDocs/node/express.tsx	64.28% <ø> (ø)
...tatic/app/gettingStartedDocs/node/gcpfunctions.tsx	65.00% <ø> (ø)
static/app/gettingStartedDocs/node/koa.tsx	52.38% <ø> (ø)
... and 3 more

... and 75 files with indirect coverage changes